Cylinder for cotton-gins.



J. T. FULLER, DEGD.

0. n. eonnon, ADMINISTRATOR.

CYLINDER FOR COTTON GINS.

APPLICATION FILED APRJG, 1910.

1,035,821. Patented Aug. 13, 1912.

F/El. 54 0 &, [NI/ENTOR UNITED STATES PATENT omnon.

JAMES T. FULLER, OF CHATTANOOGA, TENNESSEE; CHARLES D. GORDON, OFCHATTA- NOOGA, TENNESSEE, ADMINISTRATOR OF SAID FULLER, DECEASED,ASSIGNOR T0 L. T. FULLER AND MARY J. FULLER, OF HOUSTON, TEXAS.

CYLINDER FOR COTTON-GINS.

Specification of Letters Patent.

Patented Aug. 13, 1912.

To all whom it may concern:

Be it known that I, JAMES T. FULLER, citizen of the United States,residing at Chattanooga, in the county of Hamilton and State ofTennessee, have invented certain new and useful Improvements inCylinders for Cotton-Grins; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My present invention relates to toothed cylinders for cotton gins andmore particularly to cylinders in which the teeth are composed ofrounded and polished needles of steel or other hard metallic substance.

IIeretofore the toothed disks of cotton gins have been secured to theshaft or main body of the cylinder in such manner that in case it wasdesired to remove a disk, all of the disks between such disk and an endof the cylinder would have to be removed to permit said disk to be takenfrom the shaft or main body of the cylinder.

One of the objects of my said invention is to provide means whereby adisk can be removed from the cylinder without disturbing any other ofthe disks.

Another object of said invention is to provide a strong and durablemethod of securing needle points to the disks to serve as the teeth forthe same.

In the accompanying drawing I have illustrated the best form in which Ihave contemplated embodying my invention and said invention is disclosedin the following description and claims.

In the said drawings, Figure 1 is a longi t'udinal section of myimproved gin cylinder with parts broken away. Fig. 2 is a transversesection taken between two disks of the cylinder. Fig. 3 is a side viewof a part adjacent to the periphery of a disk, showing two teeth placedin the radial grooves of the disk, and two teeth finally securedtherein.

Fig. 4 shows a side section and front View of a single tooth. Fig. 5 1sa short section of a disk at its periphery on a radial line,

and Fig. 6 is a section of the same on a line In the drawings A is thecylinder shaft and B a cylindrical body mounted thereon. In thisinstance, the cylinder is made of two parts. These two parts of thecylinder 13 are firmly secured to the shaft to move therewith in anypreferred manner. I have here shown them secured at one end by a pin Z)passing through a hub of the cylinder and at the other by a nut b. Ialso prefor to employ a center key 5 as an additional securing means.The shaft is provided with the usual journals (not shown) to engage thebearings of the frame of the machine. There may be a thrust hearing atone end to prevent lateral movement. The exterior of the cylinder isprovided with shallow circumferential grooves o of such size and shapeas to receive the toothed disks. These grooves are made such a distanceapart as to properly space the disks when placed therein. Near each endof the cylinder is provided a larger and deeper groove 6 for a purposehereinafter explained. The shell of the cylinder is thickened at twodiametrically opposed points and the exterior of the cylinder at thesepoints is provided with two grooves b, b a short distance apart andextending longitudinally of. the cylinder. In these grooves I place thelocking bars C which are movable longitudinally therein. These lockingbars are four in number, two in each of the longitudinal grooves Z). Thedisks C which are annular in form, are each made in two parts orsections; each section near its end is provided on the inside withlocking notches c 0. Each of the bars C, C is provided with as manynotches c as there are disks, as shown most clearly in Fig. 1. In orderthat these notches may not too greatly weaken the bars C, C, the part 0of each disk between the notch c" and the end of the disk section is cutaway, so that the notch in the locking bar may be made of less depth andwill permit the part c to pass through the notch in the bars C and allowthe other side of the notch to be brought against the bar. The bars C, Care threaded at the outer end and such threaded portions are providedwith nuts 0 that work in the grooves 11' of the cylinder; the portion ofthe cylinder B between the grooves b and the end of the cylinder are cutaway as shown at b" to permit the bars C to move outward the desireddistance, the nuts 0 being held from any other than rotary movement.

In assembling the parts of the cylinder the bars C, C are placed in thegrooves b with their notches registering with the grooves Z) around thecylinder. The disk sections are then placed in position in these grooves5 and the nuts 0 manipulated to draw the bars longitudinally of thecylinder until a solid portion of the bars shall engage the notch ineach disk. The disks will then be held firmly in position. Should it bedesired to remove the whole or a portion of any disk the nuts on thebars C, C will be turned to bring the notches of the securing bars ofthe portion to be removed into registry with the disks. Such port-ionscan then be removed and if desired another section or sections insertedin place thereof and then secured by again moving the bars C, C. Byhaving the bars G, 0 made in two parts,

the cost of manufacture is greatly reduced and it also enables any diskto be more easily removed and with less disturbance of the parts of thecylinder, than if they were made the full length of the cylinder. Inorder that the sections of the disks may be firmly held in place whenthe bars G, C are moved to lock them in place, I prefer to form thenotches on the side of the bar that contacts with 'the part c of eachdisk with the short incline c as shown in Fig. 7. This incline is givensuch direction on each bar that on turning the nut of the bar, it willhave a wedging action upon the part 0, and draw the disk firmly intoplace.

The teeth are secured to the disk in the following manner. The disk 0 isof soft iron, soft steel or other ductile metal and is provided at oneside near the periphery with a concentric groove 03, leaving the rib obetween said groove (Z and the periphery of the disk. This rib is thengrooved radially as shown at d (Fig. 6) for the reception of the teeth.The teeth E are formed of hard metal such as tempered steel and are ofthe form shown in Fig. 4, each having the pointed curved portion 6, theangular portion 6 and between them the portion 6 flattened on the frontand back to fit the grooves d. The grooves d and the flattened portion 6of the tooth are so proportioned that this part of the tooth can beforced into one of the grooves (Z by a light tap of a hammer or byapplying sufficient pressure upon it. When in place the tooth will be asshown in Fig. 3, the pointed portion of the tooth 6 will extend beyondthe periphery of the disk, while the angular portion 6 will be in thegroove (Z. The portion 6 will preferably be of such length that theinner end will engage the inner wall of the groove (Z. The teeth may befastened by hammering or forcing the metal of the rib 0 down upon andover the tooth as shown at 6 Figs. 3

and 6, to firmly embed the tooth in the rib of the disk. I prefer tosecure them by placing them in a knurling lathe. The disk being made torevolve rapidly a knurling tool is pressed against the rib 0 and themetal of the disk will be forced down upon the tooth to firmly secureit. l/Vhile this is being done the disk will be supported on theopposite side by a face plate or in an equivalent manner. The angularportion of the tooth will hold the tooth from being withdrawn from itssocket while the flattened faces of the tooth lying in firm contact withthe straight walls of the grooves d, the tooth will be held fromturning.

That I claim and desire to secure by Let ters Patent is 1. In a cylinderof the character described, the combination with the main body providedwith circumferential grooves, of toothed disks each consisting of twoparts and means movable longitudinally of the cylinder to secure saidparts in one of the grooves in said main body to form a complete disk,said securing means being also movable to permit a disk to be detachedfrom the main body independently of all other disks.

2. In a cylinder of the character described,

the combination with a main cylindrical body provided withcircumferential grooves, of toothed disks each consisting of two partsand means movable longitudinally of the cylinder to independently securethe parts of the disks in one of the grooves of the main body, to form asingle disk, said securing means being reversely movable to permit asection of a disk to be detached from the cylinder independently of theother section or any other disk. 4 3. In a cylinder of the classdescribed, the combination with the main body of said cylinder providedwith means for holding toothed disks from movement longitudinally of thecylinder, and two pairs of grooves extending lengthwise of the cylinder.toothed disks each composed of two parts, and locking bars for lockingsaid sectional disks movably mounted in the longitudinal grooves of thecylinder.

1. In a cylinder of the character-described, the combination with themain body of said cylinder provided with means for holding the disksfrom movement longitudinally of said cylinder and two pairs of groovesextending lengthwise of the cylinder, toothed disks each composed of twoparts, and looking bars for locking said disk sections in place, mountedin said longitudinal grooves, each of said disk sections being engagedby two of said locking bars.

5. In a cylinder of the character described, the combination with themain body of the cylinder provided with circumferential grooves and twopairs of longitudinal grooves, said pairs being located diametricallyopposite each other and the two grooves of each pair being located ashort distance apart, toothed disks each composed of two parts each parthaving a locking notch near each end of the same and locking bars forlocking the said disk parts in position movably mounted in saidlongitudinal grooves and means whereby said locking bars may be made toengage and be disengaged from said disk sections.

6. In a cylinder of the character described, the combination with themain body of the cylinder provided with circumt'erential grooves and twopair of longitudinal grooves, of toothed disks each composed of twoparts or sections adapted to extend around the main body in saidcircumferential grooves, each section being provided with a lockingnotch near each end of the same, locking bars movably mounted in saidlongitudinal grooves of the main body, said locking bars being providedwith notches adapted to register with the circumferential grooves of thecylinder, and means for moving said bars longitudinally of the cylinder.

7. In a cylinder of the character described, the combination with themain body of the cylinder having circumferential grooves and two pair oflongitudinal grooves, of toothed disks each formed in two sections andengaging said circumferential grooves. locking bars movably mounted insaid longitudinal grooves, each of said locking bars having notchesadapted to register with the circumferential grooves of the main body ofthe a cylinder and means for moving said bars longitudinally.

8. The herein described toothed disk for the cylinder of a cotton gin,consisting of a main body composed of ductile material, said disk beingprovided on one side with a concentric groove near its periphery andradial grooves extending from said concentric groove to the perlphery ofthe disk and teeth of a hard metal in said radial grooves with theirinner ends against the inner wall of said concentric groove and securedby the metal of the rib between said conlgentric groove and theperiphery of the dis 9. The herein described toothed disk for cottongins, consisting of a main body composed of ductile material, providedon one side near its periphery with a concentric groove and radialgrooves extending from said concentric groove to the periphery of thedisk and teeth of a hard metal in said radial grooves with their innerends against the inner wall of said concentric groove and secured by themetal of the disk which has been forced upon them.

10. In a cylinder of the character described, the combination with themain body of said cylinder provided with means for holding the disksfrom movement longitudinally of the cylinder, said cylinder beingprovided with two pairs of grooves extending lengthwise of the same,toothed disks each composed of two parts and having locking notches, asdescribed, adapted to register with the grooves in said cylinder andmovable locking bars in said grooves there being two bars in each ofsaid grooves for locking the disks the entire length of the cylinder.

11. In a cylinder of the character described, the combination with themain body of the cylinder having circumferential grooves, of tootheddisks each formed in two sections for engaging said circumferentialgrooves said disks each having notches to register with the longitudinalgrooves of said main body and movable locking bars in said longitudinalgrooves, there being two bars in each of said grooves for locking thedisks the entire length of the cylinder.

12. In a cylinder of the character described, the combination with themain body of the cylinder having means for preventing movement of thedisks longitudinally of the cylinder and provided with two pairs oflongitudinal grooves, of toothed disks each composed of two parts eachpart having notches to register with the said grooves of the cylinder,movable locking bars in said grooves, said bars having transversenotches to register with the sections of said toothed disks, saidnotches on one side of the bar being provided with an incline to wedgeagainst part of the disk section engaged thereby.

In testimony whereof I aflix my signature, in the presence of twowitnesses.

JAMES T. FULLER.

Witnesses:

LUCY FULLER, MARY J. FULLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

